He begs me for sexting

I’ve been dating my boyfriend for 7 months, and since we’re quarantined we can’t have sex, so we enjoy spending some hours of the night sexting...

We’re doing that every day, and we both like it. Honestly I’m scared that this will become an obsession, so today I told him implicitly that we wouldn’t do it because I wanted to go to sleep earlier.

He started begging me for it, saying that he really wants to, that he misses me.

The problem is that even before quarantine started he’s often had sex on his mind... when we went out (my country has been in quarantine since March) he used to ask me to go to hidden places of my city to kiss me harder and making me feel his boner through his jeans.

Our relationship isn’t all about sex, we love each other and we like talking for hours, but I’m a bit worried. I don’t want sex (or sexting) to become an obsession... what should I do?